Ungraded vs PSA 10 George Brett #100 1978 Topps Baseball: price difference
George Brett #100 1978 Topps Baseball value — Ungraded $3 vs PSA 10 $10830. PSA 10 sells for 3,610× Ungraded (+360900%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 3,610× (+360900%) the Ungraded price — a $10,827 difference per card.
Grade 9 sells for 117.67× (+11667%) the Ungraded price — a $350 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On George Brett #100 1978 Topps Baseball, the jump from Ungraded to PSA 10 is worth $10,827 (3,610×) — if your copy grades at the top, that premium can cover the fee. A grade below the top one changes the math, so run your exact numbers first.
Run the grading break-even math →Values are estimates from real sales data — not appraisals or offers. Some links earn JunkPal a commission at no cost to you (disclosure).